Photo-litho



` UNITED sTATEs PATENTOFFICE,

GEO. W. DANA, OF DURAND, ILLINOIS.

LOCK.

Specification of Letters Patent No. 26,569, dated To aZZ whom t mayconcern:

Be it known that I, GEORGE W'. DANA, of Durand, in the county ofWinnebago and State of Illinois, have invented a new and Improved Lock;and I do hereby declare that the following is a full, clear, and exactdescription of the same, reference being had to the annexed drawings,making a part of this specification, in whichj Figure 1 is a face viewof the plate at the outer side of the door and `through which the arborsand spindles of the lock pass. Fig. is a face view of thel portion ofthe door immediately behind the plate, shownin Fig. 1. Fig. 3 is atransverse section of the lock taken in the line m, a, Fig. 4. Fig. 4 isa section of ditto, taken in the line y, y, Fig. 3. Fig. 5 is aninnerface view of one of the caps.

Similar letters of reference indicate corresponding parts in the severalfigures.

The object of this invention is to `obtain a burglar-proof andpowder-proof lock, one admitting of change or permutation, and one alsothat may be easily manipulated both as regards the effecting of thechanges and the locking and unlocking of the lock.

To enable those skilled in the art to fully understand and construct myinvention I will proceed to describe it. h

A represents the case of the lock, which may be of rectangular form, ofmetal` and constructed in the usual way. The case, A, has threebearings, a., a., a, connected with its back plate, said bearings alsoserving as nuts to receive the screws, which secure the front plate, Zi,to the case, A.

Zithin the case, A, two bolts, B C, are placed. These `bolts are eachslotted, as shown at c, in Fig. 4 and` a guide or stump, (Z, is tted ineach slot, said guides or stumps being attached to the back plate of`the case. The bolts may be arranged in the usual way so tar as theirsliding operation `is concerned. Each bolt at one side is provided witha series of teeth, e, which may be of semi-circular form as shownclearly in Fig. 4.

Within the case, A, directly back of the bolts, B C, a slide bar, D, isplaced and litted on and between suitable guides. This bar at each endis provided with a lateral projection, f, which ends forni bearings atthe back ends of the bolts when the latter are in a locked state, asshown in Fig. 4.

E is an arbor which passes transversely December a?, 185e.`

' through the case, A, and fis retained in,` proper position `by a;shoulder, g, thereon,` which just fits between? the `front and backplates of the case.` On the shoulder, g, a

wheel, F, is placedland firmly secured. This` wheel has itsperipherynotched at equal distances apart forming semi-circular re-`cesses, g, to receive the teeth, @,ofgthe bolt, B, as shown clearly inFig.\4. The wheel,

F, when notobstructed serves as a means ,j j for shooting the boltB,3back `and orth,a

key being applied to the1 louter endfffhf arbor, E, for such purpose.

Around the wheel, F, a "series of spindles,

70" G, are placed. These spindleslikethearbor,f 1

E, pass through the `case and have shoulders, f, within the casewhichwretain `themen.

proper place.

Each spindle, G," is slotted j or has a recess, 7i., made inonesideoiiits` The spindles are placed at `equal distances u il" apartcorresponding with,` the `notches ,C/,

and are allowed to turnfreely in theirbearings, and their slots orrecesses, Zi., may` exshoulders, fi The spindles,G, do not en` tendentirely around the wheel, F, only nine y y spindles are used, but there'are 'twelve `reyE j i 185 `3 cesses, g', in the wheel, F1` y j j Onthe-wheel, F, a similar `fwhefe placed. This wheel has a segmentfimover` from it, as shown clearly in Fig. 4. pe-

riphery of wheelfH, recessed, correspond`` f ing precisely with 1 the`recesses `of fwlieel,"` F.`

The wheel, H, is allowedtos turn freelyon" j the shoulder, g,.oflthearbor, E.

nOn the upper surfaceof wheel, H, two i i pins, z' z', are placed, andbetween `these pins f` f an arm, j, passes, `said arm being "attached toan arbor, I, which 1s allowedytoturnQg" freely within the case, A?.` Tothe arbor,wI, 1f

ject from the arbor, I, about` atf rightangles l with each other` asshownin Fig. l4. i

Into the teeth e, of the boltuC, a

the wheel, F, but may be `smaller lin dia`me` wheel`,".vl1,i i gears.The wheel, J, is formed precisely like ter; and in the present instanceisused` siin-` y ply as a pinion to throw the belt,C.,"` Atjthe side ofthe bolt, C,`opposite to thatwhere the l y teeth, e, are formed, there`are seinilcircular: y 110V recesses, Z, and spindles, K, arefalsofitted`in the case adjoining theside ofthe bolt, @,Uby i the recesses, Z.` Thespindles,.I{, havelslots j l l sho l tend inward about lia-lf thediameter of the i, l

or recesses, m, made in their shoulders precisely similar to those inthe spindles, G.

The arbors, E I, spindles, G K, and also the arbor, L, of the Wheel, J,pass through the door, h/I, to which the case, A, is attached by screws0, 0, as shown clearly in Fig. 3, and in the outer or face side of thedoor, M, chambers or cases, N 0, are fitted, through which the arborsand spindles pass.

On each spindle of the two sets, designated by, G K, a catch, 79, isplaced. These catches are simply circular plates provided withprojections, Q, on their upper surfaces. The catches are fitted in thechambers or cases, N O, and on squares on the spindles. To the door, M,and directly over the chambers or cases, N O, a metal plate, I), isattached, and through this plate the spindles, G K, pass and also thearbors, E I L.

On each spindle a cap, Q, is placed, said caps being of polygonal formand lettered on y each side. The caps, Q, project through the plate, P,as shown clearly in Fig. 3, and the outer side of plate, I), around eachcap is stamped with figures or otherwise marked, as shown in Fig. 1. Thecaps, Q, of the spindles, G, may be covered by a box or case R, as shownclearly in Fig. 3.

The inner ends of the caps, Q, are provided with radial recesses, 1^, asshown in Fig. 5, to fit over the projections, g, of the catches, p.

In order to turn the wheel, F, the spindles, G, must be so turned thattheir slots or recesses, 7L, will be radial with the wheel so that theproject-ions formed by the recesses or notches, g', of said wheel maypass around through the recesses of the spindles, the latter being soplaced relatively with the wheel to effect this result. The spindles, K,also in order to permit the movement of the bolt, C, require to be somoved that their slots or recesses, m, will be in line with therecesses, Z. It will be seen that the slide bar, D, requires to be movedin order to allow the bolts to be shoved back. The movement of the slidebar, D, is effected by applying a key to the arbor, I, andsimultaneously with the movement of bar D, the wheel, H, is turned assaid wheel and bar are connected to arbor, I, by the arms, 7c.

When the lock is in a locked state, as shown in Fig. 4, theprojections,f 7, of the slide bar, D, are behind the bolts, B C, and the spindles, GK, are turned so that their slots or recesses, m, will be in variousrelative positions respectively with the wheel, F, and bolt, C, thewheel, H, also will be turned so that its recesses will registerprecisely with those of wheel F. In order to unlock the lock the slidebar, D, must be moved so that its'projections, f f, will be free fromthe bolts,'B C, and in order to effect this the spindles, G, must be soturned that their slots or recesses will be radial with the wheels, F H,so as to allow the wheel, H, to turn, for this wheel, it will be bornein mind, is connected to the slide bar, D, by the arms, j .76, andarbor, I. This proper adjustment of the spindles is effected by thelettered caps, Q, in connection with the figured or.

stamped plate, P. As a person may set the spindles properly, so that thelock may be unlocked, and then note the letters on certain sides of thecaps, with the figures on the plate, P. The spindles may then be turnedpromiscuously, and no person but one acquainted with the way in whichthe spindles were set could actuate the slide bar, D, and consequentlycould not unlock the lock. The slide bar, D, prevents any pressure ofthe bolts on the wheels, F J, and spindles, and cons-equently theposition of the slots or recesses in the spindles cannot be ascertainedby pressure on the bolts. Then the lock is in an unlocked state thewheel, I-I, is in such a posit-ion that its recesses are not in registerwith the recesses of the wheel, F, and the projections formed by therecesses of wheel, H, will fit in the recesses or slots, L, of thespindles, G, and preventthe latter from being' turned or tampered with.It will be seen that one or several bolts may be used in the same lock,but only one check or guard wheel, H, is required in either case, eachbolt, however, should have spindles arranged with it. The changes of thecaps, Q, may be made at any time by simply raising them from thecatches, j), and turning them, or shifting their position on thespindles as they are fitted loosely thereon. The position of the slotsor recesses in the spindles may be seen at any time at the inner side ofthe door, as the ends of the spindles may be marked in order todesignate the side the recess is in. This affords great facility inmaking the changes. The back part of the lock may be covered by a case,T, to shield the ends of the spindles.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is y l. The employment or use of a. series ofspindles, G K, provided with slots or recesses, h m, and with letteredcaps, Q, connected by catches, p, the spindles being arranged directlywith the bolts, as with C, or indirectly by means of a wheel, F, as withB, either or both, for the purpose set forth.

2. The slide bar, D, provided with the projections, f f, arrangedrelatively with the slots, B C, and connected with the guard wheel, H,as shown, in connection with the wheel, F, and spindles, G, arranged tooper-Y Witnesses: l

THos J. WILooXoN, JOHN F. PETTENGILL,

